CVE-2021-3428

medium

Description

A flaw was found in the Linux kernel. A denial of service problem is identified if an extent tree is corrupted in a crafted ext4 filesystem in fs/ext4/extents.c in ext4_es_cache_extent. Fabricating an integer overflow, A local attacker with a special user privilege may cause a system crash problem which can lead to an availability threat.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1972621

https://ubuntu.com/security/CVE-2021-3428

https://www.openwall.com/lists/oss-security/2021/03/17/1

Details

Source: MITRE

Published: 2022-03-04

Updated: 2022-03-11

Type: CWE-190

Risk Information

CVSS v2

Base Score: 4.9

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C

Impact Score: 6.9

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3

Base Score: 5.5

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM